2 SPI .040 Over Bore Piston Kits for Yamaha many Phazer & Venture 480 & 500 73mm

2 SPI .040 Over Bore Piston Kits for Yamaha

These SPI .040 over bore piston kits, sized at 73mm, are designed for Yamaha Phazer and Venture 480 and 500 engines to restore compression and power.

Overview

These SPI .040 over bore piston kits provide a precise replacement for worn pistons in Yamaha Phazer and Venture 480 and 500 engines. Each kit includes two pistons, rings, and pins for a complete top-end rebuild. With a 73mm bore size and .040 overbore, these piston kits restore compression and improve engine performance in your snowmobile or ATV.

Built For Performance

• .040 over bore increases displacement and compression
• 73mm bore size matches factory specifications for these engines
• High-strength aluminum alloy reduces weight and improves heat transfer
• Precision-machined ring grooves and pin bores for reliable sealing
• Includes all necessary components - pistons, rings, and wrist pins

Fits These Machines

• For Yamaha Phazer 480
• For Yamaha Phazer 500
• For Yamaha Venture 480
• For Yamaha Venture 500

On-The-Job Use

• Rebuilding high-mileage snowmobile engines
• Restoring power in vintage Yamaha sleds
• Performance refresh for trail riding

Specs At A Glance

Good To Know

Q: Do these kits include piston rings and pins? A: Yes, each kit includes two pistons along with rings, wrist pins, and circlips for a complete top-end set.

Q: Are these pistons compatible with stock Yamaha connecting rods? A: Yes, they are designed as direct replacements for the original pistons in the specified engine models.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.